I remember that we had this thread in the old forum and I always loved reading and posting there! I hope this thread hasn’t been opened somewhere already.
So, which was the last new country you sent to or received from officially?
I received from San Marino today (sooo happy!) SM-380 and from United Arab Emirates not so long ago AE-27418 
Before, I didn’t have new countries for long!
Sent: Singapore 
Received: New Zealand 
Huh it’s been a while since I recently got some postcard from a new country.
It was 25/Jun/2020 and arrived from Sweden SE-180783
Amazing how long I had to wait for a card from this country which because of that seems more exotic than the most remote parts of the world, even though it is so close to me 
My last sent card to the new country is also surprising.
It was another European country - Hungary PL-1691236
My last sent card to a new country was
to Guam - arrived in 18 days und has travelled 11869km
My newest received country is the Isle of Man 
(where I sent to a couple of years ago):
I have a postcard travelling to a Latin American country, which will be the first new country in a long time for me (update: my last new country was Moldova in August 2019). I’ll let you know when it is registered. 
It’s so looooooong ago that I am not even sure. The newest country which I sent a card might be Luxembourg (August 2019) and for received it might be Macao (around January-February 2019). With post being delivered for the time-being to a handful of countries from Finland, two new countries where I could send a card at the moment are Denmark and Iceland. But since I have ticked “Repeated countries” option, the chances for that are below zero. 
… aaaaaaaaaaaand here it is! A very fast trip from Apulia 
to Peru!
Latest received was from Åland, received in August this year:
Latest new country I’ve sent to was United Arab Emirates, sent on May 12, 2016:
Latest received: Switzerland
Lates sent: Indonesia (after received 5 cards from my own country)
Latest new country I got was Macao, she is a new Postcrosser too. 
I hope she likes the card I chose since there was no profile filled out. It has not arrived to her yet, so not sure I should link it here.
My latest received was MX-57318 That, excuse me, seems to still miss the photo. I am sometimes bit behind with scanning received cards, I am afraid.
The latest new country sent was SE-182144 to Serbia
I still have quite short country list so there are good chances to get new country any day
I think Greece, but I dont how common or rare it is to get that. I know I ve never gotten Italy very often. Thanks
I don’t know how I can make a link to the card, but I rarely upload pics anyway haha
My latest new country sent is a while ago! The Philippines about a year ago
A few weeks ago I received a card from Malta, which is my latest new country received
I’m a very new PX addict, so don’t have many countries on my list yet. But yesterday I was happy to receive my first card from Australia
I have my first sent card to Belarus traveling now. My newest country to register a card I sent was Belgium 
It’s actually very easy, either you copy the card’s URL into a separate line here, or you can just type the ID and it turns into a link automatically, like DE-123 
I’ve been sending mostly to Germany, Russia, and China lately, but received a World Postcard Day card from Surinam.
That is amazingly quick delivery from New Zealand to the UK
Hello! It has been a long, long time since I received from a new country. Up until now, I had not gotten a really rare country. So, I am overjoyed with this one from The Gambia.
My most recent sent country was Oman back in February. Alas, it was returned and I sent it to the user in Germany because he had to stay there due to the virus situation.